iterator

what is the difference between Iterator and Enumeration

Could you copy and paste the the API doc for those two classes as a starting point?

Quote:

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Enumeration: An object that implements the Enumeration interface generates a series of elements, one at a time. Successive calls to the nextElement method return successive elements of the series.

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Quote:

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Iterator: An iterator over a collection. Iterator takes the place of Enumeration in the Java collections framework. Iterators differ from enumerations in two ways:

Iterators allow the caller to remove elements from the underlying collection during the iteration with well-defined semantics.
Method names have been improved.

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I suggest you use an Iterator.

There you go.

using Enumeration one can Iterate over a Collection of elements.
Iterator is same like that but able to delete the elements from the Collection.